package com.platform.apex.output;

import java.io.PrintStream;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.datatorrent.api.DefaultInputPort;
import com.datatorrent.api.annotation.Stateless;
import com.datatorrent.common.util.BaseOperator;

/**
 * Writes tuples to stdout of the container.
 * <p>
 * Mainly to be used for debugging. Users should be careful to not have this node listen to a high throughput stream<br>
 * <br>
 * </p>
 * @displayName Console Output
 * @category Output
 * @tags output operator
 *
 * @since 0.3.2
 */
@org.apache.hadoop.classification.InterfaceStability.Evolving
@Stateless
public class ConsoleOutputTjOperator extends BaseOperator
{
  private static final Logger logger = LoggerFactory.getLogger(ConsoleOutputTjOperator.class);

  private transient PrintStream stream = isStderr() ? System.err : System.out;

  /**
   * This is the input port which receives the tuples that will be written to stdout.
   */
  public final transient DefaultInputPort<Object> input = new DefaultInputPort<Object>()
  {
    @Override
    @SuppressWarnings("UseOfSystemOutOrSystemErr")
    public void process(Object t)
    {
//      String s;
//      if (stringFormat == null) {
//        s = t.toString();
//      } else {
//        s = String.format(stringFormat, t);
//      }
//      if (!silent) {
//        stream.println(s);
//      }
//      if (debug) {
//        logger.info(s);
//      }
    }
  };
  public boolean silent = false;

  /**
   * @return the silent
   */
  public boolean isSilent()
  {
    return silent;
  }

  /**
   * @param silent the silent to set
   */
  public void setSilent(boolean silent)
  {
    this.silent = silent;
  }

  /**
   * When set to true, tuples are also logged at INFO level.
   */
  private boolean debug;

  /**
   * When set to true, output to stderr
   */
  private boolean stderr = false;
  /**
   * A formatter for {@link String#format}
   */
  private String stringFormat;

  public boolean isDebug()
  {
    return debug;
  }

  public void setDebug(boolean debug)
  {
    this.debug = debug;
  }

  public boolean isStderr()
  {
    return stderr;
  }

  public void setStderr(boolean stderr)
  {
    this.stderr = stderr;
    stream = stderr ? System.err : System.out;
  }

  public String getStringFormat()
  {
    return stringFormat;
  }

  public void setStringFormat(String stringFormat)
  {
    this.stringFormat = stringFormat;
  }
}
